Seamless Switching Technology for Low Voltage Charging in 800V Electric Vehicle Systems

Authors

  • Yuze Fu Jilin Province Electric Science Research Institute Co., Ltd, Changchun, Jilin, 130000, China
  • Zhe Shi Jilin Province Electric Science Research Institute Co., Ltd, Changchun, Jilin, 130000, China
  • Cong Wang School of Electrical Engineering, Northeast Electric Power University, Jilin, Jilin, 132012, China
  • Wei Wang Jilin Province Electric Science Research Institute Co., Ltd, Changchun, Jilin, 130000, China
  • Zhenxu Ma School of Electrical Engineering, Northeast Electric Power University, Jilin, Jilin, 132012, China
  • Ruifeng Li School of Electrical Engineering, Northeast Electric Power University, Jilin, Jilin, 132012, China
  • Dongbo Guo School of Electrical Engineering, Northeast Electric Power University, Jilin, Jilin, 132012, China

DOI:

https://doi.org/10.13052/dgaej2156-3306.3957

Keywords:

800V battery, battery selection circuit (BSC), zero dead zone, seamless switching technology

Abstract

In response to the high voltage stress issue in the secondary components of the DC/DC converter caused by increasing the electric vehicle charging system from 400V to 800V, a low-voltage seamless charging switching technique is proposed, a low-voltage seamless charging switching technique is proposed. Building upon the optimized design of the 400V DC to DC Converter, this technique utilizes the Battery Selection Circuit (BSC) to enable charging of 800V high-voltage batteries. The topology is described, along with a simple modulation scheme, providing a detailed explanation of how the BSC circuit achieves seamless and dead-time-free charging for two 400V batteries. This enhances the reliability of the converter, reducing grid load fluctuations caused by the charging of a considerable number of electric vehicles. The lower voltage stress on the converter components and the separate design of the BSC circuit’s switching frequency result in overall lower losses and improved efficiency and energy utilization on demand side of the system. Finally, an experimental prototype is built to further validate the feasibility of the proposed technique.

Downloads

Download data is not yet available.

Author Biographies

Yuze Fu, Jilin Province Electric Science Research Institute Co., Ltd, Changchun, Jilin, 130000, China

Yuze Fu, female, born in 1978, Ph. She has presided over and participated in one national scientific research project, three provincial and ministerial scientific research projects, and five horizontal projects. Research Direction Power System Fault Diagnosis and Load Prediction Now affiliated with Northeast Power University.

Zhe Shi, Jilin Province Electric Science Research Institute Co., Ltd, Changchun, Jilin, 130000, China

Zhe Shi, Male, Dalian, Liaoning Province. His research interests include revenue allocation of coupled systems within the power market.

Cong Wang, School of Electrical Engineering, Northeast Electric Power University, Jilin, Jilin, 132012, China

Cong Wang, male, is currently a master’s degree candidate in Electrical Engineering at Northeast Electric Power University. His research focuses on electricity markets and low-carbon optimization operation of power systems.

Zhenxu Ma, School of Electrical Engineering, Northeast Electric Power University, Jilin, Jilin, 132012, China

Zhenxu Ma, male, obtained a master’s degree in Power System and Automation from Tsinghua University in 2000. His main research interests include planning, preliminary work, and investment in primary distribution networks.

Ruifeng Li, School of Electrical Engineering, Northeast Electric Power University, Jilin, Jilin, 132012, China

Ruifeng Li, male, is currently a master’s degree candidate in Electrical Engineering at Northeast Electric Power University. His research focuses on electricity markets and low-carbon optimization operation of power systems.

Dongbo Guo, School of Electrical Engineering, Northeast Electric Power University, Jilin, Jilin, 132012, China

Dongbo Guo, Ph.D. His main research direction is power systems and their automation.

References

J.-Y. Kim, B.-S. Lee, and D.-H. Kwon, “Low Voltage Charging Technique for Electric Vehicles With 800 V Battery,” IEEE Transactions on Industrial Electronics, vol. 69, no. 8, pp. 7890–7896, Aug. 2022.

C. Jung, “Power up with 800-V systems: The benefits ofupgrading voltage power for battery-electric passenger vehicles,” IEEE Electrif. Mag, vol. 5, no. 1, pp. 53–58, Mar. 2017.

I. Aghabali, J. Bauman, and A. Emadi, “Analysis of auxiliary power unit and charging for an 800V electric vehicle,” in Proc. IEEE Transp. Electrif. Conf. Expo, Jun. 2019, pp. 1–6.

H. Wang and Z. Li, “A PWM LLC type resonant converter adapted to wide output range in PEV charging applications,” IEEE Trans. Power Electron, vol. 33, no. 5, pp. 3791–3801, May 2018.

H. N. Tran, T. -T. Le, and H. Jeong, “High Power Density DC-DC Converter for 800V Fuel Cell Electric Vehicles,” IEEE 12th Energy Conversion Congress & Exposition, Singapore, 2021, pp. 2224–2228.

Allca-Pekarovic, P. J. Kollmeyer, and P. Mahvelatishamsabadi, “Comparison of IGBT and SiC Inverter Loss for 400V and 800V DC Bus Electric Vehicle Drivetrains,” IEEE Energy Conversion Congress and Exposition, Detroit, MI, USA, 2020, pp. 6338–6344.

Vraèar, Darko, Pejoviæ, Predrag. “Active-clamped flyback DC-DC converter in an 800V application: Design notes and control aspects,” Journal of Electrical Engineering, vol. 73, no. 4, 2022, pp.237–247.

Bertino, D. de Simone and L. Piegari, “Design and operation of a fail-operational 5kW 800V-12V DC-DC converter,” European Conference on Power Electronics and Applications, Genova, Italy, 2019, pp. 1–10.

Aghabali, J. Bauman and A. Emadi, “Analysis of Auxiliary Power Unit and Charging for an 800V Electric Vehicle,” IEEE Transportation Electrification Conference and Expo, Detroit, MI, USA, 2019, pp. 1–6.

C. Lim, Y. Jeong, and G. Moon, “Phase-shifted full-bridge DC-DC converter with high efficiency and high power density using center-tapped clamp circuit for battery charging in electric vehicles,” IEEE Trans. Power Electron., vol. 34, no. 11, pp. 10945–10959, Nov. 2019.

M. Abbasi and J. Lam, “An SiC-based AC/DC CCM bridgeless onboard EVchargerwith coupled active voltage doubler rectifiers for 800-V battery systems,” IEEE Appl. Power Electron. Conf. Expo, Mar. 2020, pp. 905–910.

K. Kim, J. Han, B. Lee, and G. Moon, “High-efficiency three-level DC-DC converter with reduced circulating current and rectifier voltage stress,” IEEE Trans. Power Electron, vol. 35, no. 3, pp. 2668–2679.

Z. Guo, K. Sun and L. Zhang, “Analysis and Evaluation of Dual Half-Bridge Cascaded Three-Level DC–DC Converter for Reducing Circulating Current Loss,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 5, no. 1, March 2017, pp. 351–362.

H. Haga and F. Kurokawa, “Modulationmethod ofa full-bridge three-level LLC resonant converter for battery charger of electrical vehicles,” IEEE Trans. Power Electron, vol. 32, no. 4, pp. 2498–2507, Apr. 2017.

L. A. D. Ta, N. D. Dao and D. -C. Lee, “High-Efficiency Hybrid LLC Resonant Converter for On-Board Chargers of Plug-In Electric Vehicles,” IEEE Transactions on Power Electronics, vol. 35, no. 8, pp. 8324–8334, Aug. 2020.

Nazerian, R. Yu, Q. Huang, M. Heydari, H. S. Rizi and A. Q. Huang, “High Efficiency, High Power Density 10kW Flying Capacitor Converter Based on 650V GaN for 800V EV Applications,” IEEE Energy Conversion Congress and Exposition , Nashville, TN, USA, 2023, pp. 1863–1869.

N. Langmaack, G. Tareilus, G. Bremer, and M. Henke, “Transformerlessonboard charger for electric vehicles with 800 V power system,” IEEE 13th Int. Conf. Power Electron. Drive Syst, Jul. 2019, pp. 1–5.

S. H. Lee, B. Lee, D. Kwon, J. Ahn, and J. Kim, “Two-mode low-voltage DC/DC converter with high and wide input voltage range,” IEEE Trans. Ind. Electron, vol. 68, no. 12, pp. 12088–12099, Dec. 2021.

B. Kim, K. Kim, and S. Choi, “A 800V/14V soft-switched converter with low-voltage rating of switch for xEV applications,” in Proc. Int. Power Electron. Conf, May 2018, pp. 256–260.

Mishra, S., Das, D., & Paul, S. (2010). Active Loss Allocation Systems in Radial Distribution Systems. Cogeneration & Distributed Generation Journal, 25(3), 26–43.

Ramana, T., Ganesh, V., & Sivanagaraju, S. (2010). Distributed Generator Placement And Sizing in Unbalanced Radial Distribution System. Cogeneration & Distributed Generation Journal, 25(1), 52–71.

Kong, X., Zhang, Z., & Yin, X. (2015). Fault Current Study of Inverter Interfaced Distributed Generators. Distributed Generation & Alternative Energy Journal, 30(3), 6–26.

Downloads

Published

2024-12-24

How to Cite

Fu, Y. ., Shi, Z. ., Wang, C. ., Wang, W. ., Ma, Z. ., Li, R. ., & Guo, D. . (2024). Seamless Switching Technology for Low Voltage Charging in 800V Electric Vehicle Systems. Distributed Generation &Amp; Alternative Energy Journal, 39(05), 1097–1114. https://doi.org/10.13052/dgaej2156-3306.3957

Issue

2024: Vol 39 Iss 5

Section

Renewable Power & Energy Systems